Question

Nodes of Ranvier are

• A. Areas found in stomach wall
  
• B. Areas where myelin sheath of nerve touches the axon
• C. Nodes formed in skeletal muscle
  
• D. Areas of swellings of axons

Answer 1

The correct option is B Areas where myelin sheath of nerve touches the axon

Nodes of Ranvier
The myelin sheath, an insulating lipid layer, is secreted discontinuously by the Schwann cells around the axon of neurons.
The gaps or areas that do not have the myelin sheath in a medullary neuron are called nodes of Ranvier.
The node of Ranvier helps in the saltatory conduction of nerve impulses in the myelinated neuron.